Power correction module

Emerson Network Power has launched a 720 W power factor correction module that has a 61 x 89 mm footprint and a mounting height of 14 mm, making it suitable for space-constrained applications.

The AIT02ZPFC features a universal input that accepts any voltage from 85 to 264 AC at any frequency from 47 to 63 Hz and from 360 to 800 Hz.

The module presents a near unity power factor to the incoming power line and generates a typical output of 393 VDC, which is intended for feeding to one or more high-voltage DC-DC converters for further down-conversion to the low voltages required by the application.

When fed with a 230 VAC input, the module has a typical power conversion efficiency of 93%. It can deliver up to 1.83 A at 393 VDC and achieve a power density of more than 155 W per cubic". The module uses active power factor correction to minimise input harmonic current distortion and ensure compliance with the RTCA/DO-160D avionics standard at 115 VAC at full load.

Built-in control and monitoring functions make the module easy to integrate within a system. Remote-enable and temperature monitoring functions are provided as standard and the output voltage can be adjusted from 79 to 100% of nominal via a single control pin. Inrush current is limited by an external resistor.

The module is fully encapsulated and has an aluminium baseplate for conduction cooling. It has a no minimum load requirement and operates over a wide baseplate temperature range of -20 to +100°C. Input-to-baseplate and output-to-baseplate isolation is rated at 2700 VDC, and leakage current is held to less than 3 mA at 800 Hz input.

The module is fully protected against overvoltage and over-temperature conditions and carries a full set of international safety agency approvals, including EN60950TUV and UL/cUL60950.